债券的发行价格可以分为：平价发行、折价发行和溢价发行。（）
参考答案：对
用所给词的适当形式填空。
1. Ann goes __________ (cycle) once a week.
2. Maria, you look __________ (tiring). What's wrong?
3. Han Mei plays table tennis _________ (two) a week.
4. You should drink plenty of __________ (boil) water.
5. It will be __________ (sun) in Beijing this weekend.
营养土
